nd it to contain per gallon--

Organic matter and ammoniacal salts 53.03
Soluble silica 6.47
Insoluble siliceous matter (clay) 15.17
Oxide of iron and alumina 2.36
Lime 6.60
Magnesia 1.73
-----
Potash 0.35
Chloride of potassium 1.95
Chloride of sodium 4.81
Phosphoric acid 3.72
Sulphuric acid 1.94
Carbonic acid, and loss 0.47
-----
Total solids 96.60
Ammonia 8.10

The quantity of this liquid distributed per acre is about 50,000
gallons, at a cost of 2d. per gallon. As this quantity contains about 39
lbs. of ammonia, it must be nearly equivalent to 2 cwt. of Peruvian
guano, which costs, with the expense of spreading, from 28s. to 30s. per
acre, while the cost of distributing the liquid exceeds L1: 17s. per
acre. On the other hand, the rapidity with which liquid manure produces
its effect must be taken into account. It is on this that its chief
value depends, and especially when applied to grass land in early
spring, it produces an abundant crop just when turnips and other winter
food are exhausted. Mr. Telfer, Cunning Park, who has used this system
for a good many years, has come to the conclusion that it is only in
this way that it can be made profitable; and though pipes are laid all
over his farm, he has latterly restricted the use of the liquid manure
entirely to Italian ryegrass. Its effect on the cereals is much less
marked, and it can scarcely be considered as capable of advantageous
application to the general operations of the farm. Neither can liquid
manure be applied to all soils. It fails entirely on heavy clays, but is
peculiarly adapted to light sandy soils; and even barren sand may by its
repeated application, be made to yield luxuriant crops. It is not likely
that the system of liquid manuring will extend, except in localities
where it is possible to distribute it by gravitation; and even then, it
will probably be found most economical to restrict its use to one
portion of the farm; and for that purpose, the poorest and most sandy
soil ought to be selected.

_Sewage Manure._